0 dB SMA Cryogenic Fixed Attenuator DC–18 GHz 2 W VST-QU-SMA000202-18G
P/N: VST-QU-SMA000202-18G
- For cryogenic signal routing and impedance matching
- Near-through response with minimal added loss
- Inline SMA format for easy system integration
- Well suited to quantum and dilution refrigerator setups
- Supports precision microwave paths through 18 GHz
Engineering Note
The VST-QU-SMA000202-18G is a 0 dB SMA cryogenic fixed attenuator for low-temperature RF systems that require minimal signal reduction while maintaining a controlled 50 Ω path. It supports DC–18 GHz operation with a 2 W power rating, ±0.3 dB attenuation tolerance, and VSWR 1.35:1 max. This inline attenuator is suited to cryogenic RF systems, quantum computing applications, dilution refrigerator signal chains, and other microwave measurement setups where stable interconnect behavior is required.
Technical Specifications
| Part Number | VST-QU-SMA000202-18G |
|---|---|
| Product Type | SMA Cryogenic Fixed Attenuator |
| Nominal Attenuation | 0 dB |
| Attenuation Tolerance | ±0.3 dB |
| Frequency Range | DC–18 GHz |
| VSWR (Max) | 1.35 : 1 |
| Impedance | 50 Ω |
| Power Rating | 2 W |
| Connector Interface | SMA-JK |
| Body Material | Brass, gold-plated |
| Male Inner Contact | Beryllium copper, gold-plated |
| Female Inner Contact | Beryllium copper, gold-plated |
| Body Length | 22 ± 1 mm |
| Across Flats | 5/16 HEX |
| Structure | Inline SMA cryogenic fixed attenuator |
| Body Format | 0–12 dB body format |
| Compliance | RoHS |
| Configuration | Non-magnetic option available |
Target Applications
Cryogenic RF Systems
Suitable for low-temperature RF paths where impedance continuity is needed with minimal nominal attenuation.
Quantum Computing Signal Chains
Used in dilution refrigerator and quantum measurement setups where controlled RF path matching is required.
Low-Temperature Microwave Measurement
A practical choice for cryogenic test paths, microwave interconnect tuning, and RF path matching in low-temperature environments.
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